Pipe-cutting machine.



F. LA VINE.

PIPE CUTTING MACHINE.

APPLICATION FILED JAN. 26, 1909.

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P. f U iv 8 &

P. LA VINE.

PIPE CUTTING MACHINE.

APPLICATION FILED .TAN.26,1909.

932,989. Patented Aug. 31, 1909.

3 SHEETS-SHEET 2.

ilffoznev a P. LA VINE.

PIPE CUTTING MACHINE.

APPLIOATION FILED JAN. 26, 1909.

932,989. Patented Aug. 31, 1909.

3 SHEETS-SHEET 3 FREDERICK LA VINE. F DALLAS CITY, ILLINOIS.

PIPE-CUTTING MAGHINE.

Specification of Letters Patent.

Patented Aug. 31, 1909.

Application filed January 26, 1909. Serial No. 474,251.

T 0 all whom it may concern:

Be it known that I, FREDERICK LA VINE, a citizen of the United States, residing at Dallas City, in the county of Hancock and State of Illinois, have invented a new and useful Pipe-Cutting Machine: and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same;

This invention relates to pipe cutting machines, especially to a device of this character, the knives of which are circular and are revolved in an annular plane about the pipe to be cut, and at the same time revolve upon their respective pivots or centers, and the said knives are fed toward and concentric to the center of the said pipe; this is all accomplished by the rotation of a revolving member or disk, as will be hereinafter clearly described, which description will coincide with the disclosure in the drawings.

An object. of the invention is the provision of means whereby the said knives maybe held so as to limit their feeding toward the center of the pipe and vice versa.

Another object of the invention is to provide means for holding a pipe to be cut in a rigid position, and, after the pipe is cut, the cutting mechanism is so constructed as to allow the same to be receded upon its horizontal sup iort, so as to allow the pipeto project beyon so as to receive a stock uid die for threading the pipe, or, the means for supportlng the pipe rigidly, may be manipulated so as to release the pipe, thus allowing the same to be-drawn beyond the cutting mechanism, so as to allowlthe end thereof to be threaded by the use of a stock and die; after the pipe is drawn forward, the said means is again tightened upon the pipe,'as will be clearly evident.

This invention-com rises further objects and combinations of e ements, which will be hereinafter more fully described shown? in the accompanying drawings, and the novel features thereof will be pointed out by the appended claims.

The features, elements and the arrangement thereof, which constitute theabove entitledinvention, may be changed and varied, that is to say, in an actual reduction to practice, with the understanding that the changes and variations accruing from said reduction to practice are limited to the scope of the appended claims.

To obtain a full and correct understanding of the details of construction, combinations of features, elements and advantages, reference is to be had to-the hereinafter set forth description and the accompanying drawings in connection therewith, wherein-- Figure 1 is a perspective View of the pipe cutting machine, showing means for supporting the pipe. Fig. 2 is a front elevation of the pipe cutting machine and its support. Fig. 3 is a sectional View upon line 3 3 of Fig. 2. Fig. 4 is a sectional view upon line 4-2t of Fig. 3, looking in the direction of the arrow. Fig. 5 is a rear face view of the annular rack-ring, showing its teeth and the pawls for engaging the teeth upon the periphery oft-he ring. Fig. 6 is a detail View of the means for operating the pawls. Fig. 7 is a view of a slight modification of a portion of the apparatus. Fig. 8 is a sectional 7 view upon line 8--8 of Fig. 2.

In regard to the drawings, wherein similar reference characters indicate corresponding parts in the several illustrations, 1 designates a bench or table, composed of a top 2 and legs 3. Upon the top plates 4 and 5 are'fixed by screws or other suitahle'means 7. These plates are provided with threaded sockets 8, in which pipes or 'bars 9 are threaded, which bars or pipes ;-.are disposed parallel to each other. Capable of adjustment upon the-said parallel pipes or bars are the pipe-supporting means and the ipe cutting mechanism 10 and 11, as shown.

he pipe+supporting mechanism has sleeves 12,-which are received'by the said parallel pipes or bars; The said sleeves have brazed between them a bar, rod or pipe 13 as shown, and one of the sleeves is split, as. shown at 14, the free ends of which are provided with ears 15, into which a bolt 16 extends, having a suitable nut, .whereby the said sleeve may be tightened upon one of the said parallel bars or rods, there being two sleeves thatare ioined together, both may be held in paral el relation upon the said parallel bars. Projecting from one of the sleeves is a vertical hollow standard ormember 17, which is brazed to said sleeve. Projecting laterally of said standard, and brazed thereto and to the bar or pipe 13, is an oifset bearing 18, for the reception of the right and left threaded shaft 19. The said standand is provided with a pair of sliding aws 20, the teeth of which are adapted to engage the pipe 21 to be out. The rightand left receive approximately the largest size of 551 The face 4 of the said disk or ma n which carries the suitable pipe cut pipe, and,

similar bushings of diminutive sizes, smaller threaded shaft extends through and is threaded in the bores 22 of said jaws, and

b the manipulation of the said right and left vided with a cap plate 24, adapted to fit over the upper end of the said standard, and held in arigid position by means of the set screw 25, as shown clearly in the rear view of the apparatus. The upper portion of the said right and left threaded shaft is con tracted, as shown, so as to be properly received by the said bearing, the extreme end of the said right and left threaded shaft is provided with a rectangular portion 26, which receives a collar 27, held in position thereon by means of set screw 28, and extending lateral] of said collar is a crank 29, having a suitab e handle 30, by the manipulation of which the right and left threaded shaft may be rotated, for opening or closing the said jaws: The lower end of the said right and left threaded shaft is contracted, as shown at 31, so as to be properly received by its bearing. The cutting mechanism is .surmounted upon sleeves 32 similar to'the sleeves hereinbefore described, one of which is split, the free portions of which have-ears 33, which receive the bolt 34, having threadedthereto a nut 35, and by the tightenin of said nut, the said sleeve ma be securel field upon one of the said ara lel bars. e last-named sleeves have razed-above and between them the frame for the pipe cutting mechanism, and in this manner the said last-named sleeves maybe held in parallel relation upon the said parallel bars. The said frame 36 for supporting the pi e cutting mechanism comprises two parts 3 and 38,, the part 37 being brazed to the said last-named sleeves, while the upper part 38 is held to the lower art by suitable cap screws or bolts 39.

en these two parts are placed in registration, an annular opening 40 is formed,-

by the semi-annular o nings 41 of each ofsaid arts. The sai annular openin is provid vwith an annular groove 42, which receives the revolving disk or member 43,

I mechanismproper, as clearly shown. T e said disk. or member 43 is provided with an annular rib 44, to be received by the said groove, and in which the said r b revolves.

he said disk or member 43 is provided with a central cylindrical opening 45 d ed be huti T-his fon-the'reception 6f central opening may lpes to he of'such a size as'to the'use of .the bushing 46 or pipes may be'supported in said central openaaaese 7 be! 43 is provided with an offsetportion 48, the shape of which, as shown in one of the figures of the drawings, is trian lar, and the corners thereof are provide .with re cesses 49, in which pinions 50 are positioned, and are adapted to rotate. Beyondthe said recesses, that is to say, toward the center of the said central opemnng, the said offset portion is recessed, radia y of the said central opening as shown at 52. The walls 51 of the recesses 52 are beveled, and are ada ted to be engaged by the beveled faces 54 ofthe blocks 55. These blocks have pivoted in their lower portions disk knives 56, the annulardperipheries of which are beveled and provi ed with cutting edges, so as to properly cut the pipe to be severed. These disk knives revolve in recesses 57 of said blocks, and the said blocks are provided with threaded contracted shanks 58, the threads of which engage the threads 59 of the bores 60 of the said 'inions. The extremities of the said redu threaded shank ortions are movable in bearin 61 of the sai 'ofiset portion, as clearly. own. It will be clearly evident, u 11 an examination of the drawings, that the rotation of the said pinions, the said b ocks and their knives will -be moved toward and concentric with the center of the 'said central opening. 63 designates an annular rack ring, the teeth 64 of which, as shown, enga e the said pinions, and, when this ring is hdld stationary, and the disk or member 43 is rotated, the said pinions will force the blocks and their knives radially inward or outward,

\ as will be clearly understood. The annular periphery of the ring 63 is rovided' with teeth 65, to beengaged by t 1e ratchets or pawls 66,-their o' ration bein hereinafter 1 disclosed. This ring has a slip aring upon the annular bearin ring 68, which 1s provided with an annu ar shoulder 69, designed for holding the ring in en ement with the said inions. The annul i finaring ring 1 has a p urality of radial projections 70, which are secured to the two parts of the said frame by means of screws, bolts or other fastening means 71, as shown. These projectionsform bearings 72, for the pivots 1 of said ratchets or paw s. The pivot pins 73 ofthe said ratchets or pawls are extended 7 beyond the said projections, and are provided with cross bars-74, all of which are conriected by the pitman rods 75, which are 1 dispomd in the form of a triangle,'as shown clearly in 2 of the drawings. One of the crossbars, or, in other words, the upper oneisprovided with an upwardl pro ecting handle 7 6,,-and projecting ownward. frpm'said barlis an extension 77, as shown. 'lmisextension 71 has pivoted thereto a rod 78, hasla slidi movement in a U- aha bracket'79, as! own-clearly in Fig.

2 o the drawings The rod 78 is provided 1 with a collar 80, upon either side of which and encircling said rod 78 a spring 81 is mounted. These springs allow the upper cross bar 74 and its handle to have a yielding action. When the handle is operated in one direction or the other, the said ratchets or pawls are manipulated, so as to cause their engagement with the teeth upon the periphery of the said rack ring, thereby retarding the movement of the said rack ring, which will cause the said pinions to operate. A slight modification of the springs and especially their rod 78, for allowing the said handle to have movement, is shown in Fig. 8, in which figure the said rod 78 is not pivoted to the lower extension of the said cross bar, but the said-rod or bar 78 is provided with a V-shaped head 84, which is adapted to coiiperate with a V-shaped recess of the lower extension of the said cross bar. When the said handle, as shown in this modification, is manipulated, the action of the rod or bar 78 is downward against the tension of the springs in lieu of being upward, but the result is the same.

illie two parts of the frame in which the disk or member 43 revolves are provided with rearwardly extending parallel disposed ears 85, their adjacent faces being rovided with semicircular recesses 86 whic when in registration, form a bearing 87 for the shaft 88; Secured toand adapted to rotate with-this shaft 88 is a beveled inion 89, the teeth of which are designed to mesh with the teeth 90, formed upon an annular plane upon the rear face of the said disk or member 43, as shown in the drawings. 91 designates a handle, which projects-lat;

erall from the crank 92, which is carried by t \e said shaft. 88, When the shaft 88 is rotated in one direction or the other by the handle, the disk or member 43 is rotated, and the-cutting knives are carried therewith,

.therebyhaving action upon the pipe to be severed. When the said rack ring is retarded in its movement by the ratchets or pawls, the said pinions of the otfsets are rotated, because of the fact that they are carried by the moving or revolving disk or member 43, and when the said pinions are rotated, the knives and their blocks are moved toward and concentric with the center of the central opening of the said disk or member 43.

From the foregoing, the essential features, elements and the operation of: the device, together with the simplicity thereof, will be clearly apparent.

Having thus fully described the invention, what is claimed as new and useful is:-

1. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving member having radially moiving knives, said knives being pivoted in rapidly moving blocks carried by said member, means for "knives being advancing the blocks toward and from the center of said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means having means for providing resiliency therefor.

2. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving member having radially moving knives, said knives being pivoted in radially moving blacks carried by said member, means for simultaneously advancing the blocks toward and from the center of said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means hay-- ing means for providing resiliency therefor, and means for manually operating said revolving member.

3. In a pipe cutting machine, means for rigidly-supporting a pipe, a revolving memher having radially moving knives, said, knives being pivot-ed in radially moving blocks carried by said member, said blocks h'aving pinions for advancing them toward and from the center of said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with'the center of said member, said manually operated means when released prevents the advancing act on of said knives, said manually operated means having means for providing resiliency therefor.

4. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving mem her having radially moving knives, said ivoted in radially moving. blocks carried y said member, said blocks having pinions for advancing them toward and from the center of said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means having means for providing resiliency therefor.

5. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving member having radially moving knives, said knives being ivoted in radially moving blocks carried y said member, said blocks having pinions for advancing them toward and from the center of said member, means rigidly supporting a pipe, a revolving mem-' having pinions for advancing them toward and from the center of said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means when released preventing the advancing action of said knives, said manually operated means havin means for providing resiliency theretbr.

7. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving member having radially moving knives, said knives being pivoted in radially moving blocks carried b said member, said blocks havin pinions br advancin them toward and rom the center of sai member, and means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means having ratchets or pawls simultaneousl manipulated which retard the said secon named means.

8. In a pipe cutting machine, means for ber having radially moving knives, said knives being ivoted in radially moving blocks carried said member, said blocks having pinions or advancing them toward and from the center of said member, means retarded by manually operated means for causingthe advancement of the knives toward and concentric with the center of said member, said manually operated means having ratchets or pawls simultaneously manipulated which retard the said secondnamed means, said manually operated means paving means for providing resiliency there- 9. In a pipe cutting machine, means for rigidly supporting a pipe, a revolving member having radially moving knives, said knives being pivoted in radially moving blocks carried by said member, said blocks having pinions for advancing them toward and from the centerof said member, means retarded by manually operated means for causing the advancement of the knives toward and concentric with the center of said member, said manually operated means having ratchets orpawls slmultaneously manipulated to retard the said second-named means, said manually operated means when released preventing the advancing action of i said knives.

10. In a pipe cutting machine, means forrigidly supporting a pipe, a revolving member having radially moving knives, said knives being ivoted in radially moving q blocks carried by said membergsaid blocks having pinions for advancing them toward and from the center of said'member, means retarded by manually operated means for causing the advancement of the knives toa ward and concentric with the center of said a member, said manuall operated means having ratchets or paw s simultaneously ma nipulated to retard the said second-named means, said manually .operated means when 7 released preventing theadvancing action of said knives, said manually operated means lfiaving means for providing resiliency there- In testimony whereof I have signed my 7 name to this specification in the presence of two subscribing witnesses.

FREDERICK LA VINE.

Witnesses:

WM. H. Soorr, ORVILLE C; KIRKPATRICK. 

